i just started with angular.i checked few links stackoverflow links but none worked in my case.i have table where i am adding rows dynamically and i also need to delete rows dynamically but my code deleting rows from the last row even i am clicking delete button of some other row.i used below code and i am giving stackblitz link below. thanks in advance.
rows = [1]; addrows() { this.rows.push(1); } deleterow(row){ this.rows.splice(row, 1); }
<table> <tr *ngFor="let row of rows;"> <td> something</td> <td> something</td> <td> something</td> <td> <button class="btn btn-danger" (click)="deleterow(i)">Delete</button> </td> <tr> <table> <div class="text-center"> <button class="btn btn-primary" (click)="addrows()">ADD more rows</button> </div>
You need to use the row's index to splice the row. You are currently just hoping that a variable i
gets magically created.
In my solution's component.ts, I am going to allow my HTML to add to and delete from a simple array.
component.ts
counter: number = 0;
rows = [];
addRow() {
this.counter++;
this.rows.push(this.counter);
}
deleteRow(row: number) {
this.rows.splice(row, 1);
}
The key to the deleteRow
function is that you need access to the current index within *ngFor
. For that, you can use let i = index
within the *ngFor
to store the current index in a variable i
.
component.html
<table>
<tr *ngFor="let row of rows; let i = index">
<td>{{row}}</td>
<td><button (click)="deleteRow(i)">Delete row</button></td>
</tr>
</table>
<button (click)="addRow()">Add row</button>
Javascript
deleterow(id){ document.getElementById("row"+id).remove(); }
HTML
<td id="row1"> <button class="btn btn-danger" onclick="deleterow(1)">Delete</button> </td>
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